lungren



. C. M. LUNGRBN.

LAMP.

N0..595,721. Patented Deo. 21,1 97.

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CHARLES IVLLUNGREN, OF BAYONNE, NEW JERSEY, ASSIGNOR TO THE SAFETY CARHEATING AND LIGHTING COMPANY7 OF NEW YORK, N. Y.

LAMP.

SPECIFICATION forming part of LettersPatent No. 595,721, dated December21, 1897.

Application filed December I5, 1896. Serial No. 615,781. (No model.)

To all whom t may concern.-

Beit known that I, CHARLES M. LUNGREN, of Bayonne, in the county ofBergen, State of New Jersey, have invented certain neuT and usefulImprovements in Lamps,of which the following is a completespecifcatiomreference being had to the accompanying drawings.

This invention relates to regenerative gaslamps, and has for its objectthe production of a practicable lamp for burning gases of widely-varyingqualities. I accomplish this object by providing automatic means forproportionately regulating the gas-supply and the draft of the lamp,employing for that purpose, for example, a variable chimneydraftmechanically connected With the gaskey, so that the movement of the keyimparts a proportionate movement toqthe chimneydraft. The richer the gassupplied to the lamp the less the gas-key may be turned to admit therequisite amount ot' gas, and the poorer the quality of the gas thegreater must be the movement of the key. I propose to take advantage ofthese conditions by providing mechanism for altering the 'chimneydraftin direct ratio to the requirements of the gas employed. Thechimney-draft mechanism may be varied in a number of ways. In thedrawings I illustrate, by way of example, three different ways ofcontrolling the chimney-draft-namely, by an opening in the base of theflue, by a damper, and by a telescopic flue. These three varieties ofmechanism are deemed sufficient to clearly indicate the nature of theinvention and several of the numerous Ways in which it may be carriedinto effect practically.

In the accompanying drawings, Figure I is a side elevation of a lamp,showing draftregulating mechanism opening into the base of the iue. Fig.II is a horizontal section on the line II II of Fig. I. Fig. IIIillustrates a telescopic flue, other portions of the lamp being omitted.Fig. IV is a section on the line IV IV of Fig. III. Fig. V is a sideelevation of a portion of a lamp provided with a damper located over thetop of the chimney.

Referring to the figures on the drawings, and at first with specialreference to Figs. I and II thereof, l indicates an inverted burner ofany usual or preferred type.

It is illustrated as pendent from an air-shell 2. Air is supplied to theburner in any usual manner, as through radial passages 3, formed in theregenerator 4. From the lower end of the burner l the gasissuing isignited and forms an inverted annular or cup shaped flame 5, which issurrounded and protected bya globe 6. The lamp is supported as usual, asby brackets 7, one of which, 8, being tubular, constitutes thegas-supply pipe.

The elements above described are taken as an example of the type of lampto which my invention is applicable, and being in the form shown and inthe wide variations to which such lamps are susceptible well known inthe art do not require detail description.

The lamp is provided with a suitable chimney 9 of any preferred form ordesign, which surmounts the conical cover lO of the regenerator. Thechimney is provided near its base with one or more openings l1. Aroundthat portion of the chimney in which the openings 1l are located isprovided a rotatable sleeve l2, that tits snugly around the chimney andwhich is provided with one or more apertures 13, corresponding in sizeand positionto the aperture or apertures 1l in the chimney. Through therotation of the sleeve the apertures in the chimney may be .Wholly orpartiallyT closed. Consequently by means of a suitable connectionbetween the sleeve and the gas-key 14 the size of the apertures in thechimney, or, in other words, the draft of the lamp, may be regulatedproportionately to the movement of the gas-key, or, in other words, tothe amount of gas supplied to the burner.

In the different figures of the drawings I illustrate a variety ofmechanisms for mechanically connecting the gas-key With thedraft-regulating mechanism In Figs. I and II the sleeve 12 is providedat its lower part with a sprocket-wheel 15, Whose teeth mesh with t-helinks of a sprocketchain 16, that engage also with the teeth of asprocket-pinion 17, secured to the upper end of the gas-key 14. Therelative positions of the apertures l1 and 13 in the sleeve and chimney,respectively, having been in the rst place properly' determined thesubsequent movement of the gas-key can be made IOO to accurately controlthe chimney-draft in required proportion to the gas-supply.

By providing a number of openings 11 and 13 and properly proportioningthe sprocket Wheel and pinion a very slight movement of the gas-key willbe suficient to vary the chimney-openings from the closed to thewide-open position.

To protect the apertures 11 and 13 from cross-drafts, I prefer toprovide upon the chimney 9 a guard or hood 19.

In Figs. III and IV another form of draftregulating mechanism is shown,which comprises a telescopic chimney and means for operating it. Inthose figures 20 indicates the conical cover of the regenerator; 21, thegassupply pipe; 22, the gas-key, and 23 a stationary chimney surmountingthe cover 20. Around the upper end of the stationary chimney 23 Iprovide a movable chimney adapted to slide freely up and down upon thestationary chimney without turning. Around the base of the stationarychimney, underneath the movable chimney and of equal diameter with it, Iprovide a rotatable sleeve 25.

The bottom of the movable chimney 24 and the top of the sleeve aredefined by inclined edges 26 and 27, respectively. Consequently therotation of the sleeve 25 accomplishes the raising and lowering of themovable chimney 24.

The rotation of the sleeve 25 may be aecomplished by any suitablemechanism-as, for example, the sprocket-wheels and chain previouslydescribed. The mechanism illustrated in Figs. III and IV, however,consists of a toothed ring or gear 27, secured to the sleeve 25 near itslower end, and a rack 28, whose teeth mesh with the teeth of the gear 27and which is pivoted at one end, as indicated at 29, to an arm 30,secured to the upper end of the key 22.

Sufficient range of movement of the chimney 24 is readily obtained bythe employment of the angular edges 2G and 27 upon the ends of thechimney and sleeve, respectively, and bythe employment of an arm 30 ofsuitable length.

In Fig. V, I illustrate another form of draftregulating mechanism inwhich a damper upon the upper end of the chimney is employed. In thatfigure 31 indicates the conical cover of a lamp, 32 a gas-supply pipe,and 33 a gas-key. 34 indicates a chimney, and 35 a damper pivoted, asindicated at 36, above the top of the same. An arm 37, secured to thedamper and projecting from it at an angle, is pivotally united, asindicated at 3S, to a rod 3f), the lower end of which is pivotallyunited, as indicated at 40, to one arm of a bell-crank lever41,thatispivotallysupported, as indicated at 42, upon the chimney. The arm of thebell-crank lever 41 is pivotally united, as indicated at 43, to a link44, that is pivotally united, as indicated at 45, to a stud 46, pivoted,as indicated at 47, to an arm 48, secured to the upper end of thegas-key 33.

Through the employment of the mechanism lastv described the damper 35maybe conveniently operated by turning the gas-key 33. Any desired rangeof movement may be given the damper by properly proportioning thedifferent parts of the mechanism.

It will. be observed that the regulator for the chimney and the gas-keyare arranged both above the lamp and close together and in substantiallythe same horizontal plane, so that the connecting mechanism between themis short and simple in arrangement and construction and is but littleexposed to view.

What I claim is" 1`. In a regenerative gas-lamp, the combination with agas-supply pipe, and gas-key therein, of a draft-controlling chimney onthe lamp, and mechanism operatively uniting the chimney and the gas-key,whereby the chim- Dey-draft is varied in proportion to the movement ofthe gas-key, substantially as set forth.

2. In a regenerative gas-lamp, the combination with agas-supply pipe,and gas-key therein, of a chimney to the lamp, apertures in the lowerportion of the chimney, a sleeve surrounding the apertures and providedwith apertures which register with those in the chimney, and mechanismoperatively uniting the sleeve and the gas-key, whereby the sleeve maybe actuated by the movement of the gasley to open and close the openingsin the chimney, substantially as specified.

3. In a gas-lamp of the inverted regenerative type, the combination withthe burner, the chimney, and the gas-supply key, of a draft-controllerfor the chimney in substantially the same plane as the gas-key, andconnecting mechanism between the gas-key and such chimney-draftcontroller, substantially as set forth.

In testimony of all which I have hereunto subscribed my name.

CHARLES M. LUNGREN.

Witnesses:

H. G. DARWIN, J. A. DIXON.

IOO

